./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-100.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-100.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d866fedd3df666b1282e36d0ae87b17d0a587658c87dddd4d2314d9586432757 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:06:45,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:06:45,166 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 22:06:45,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:06:45,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:06:45,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:06:45,194 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:06:45,195 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:06:45,195 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:06:45,196 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:06:45,196 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 22:06:45,196 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 22:06:45,197 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:06:45,199 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:06:45,199 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:06:45,199 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:06:45,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 22:06:45,200 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 22:06:45,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:06:45,201 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 22:06:45,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:06:45,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 22:06:45,205 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 22:06:45,205 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 22:06:45,205 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:06:45,206 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 22:06:45,206 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:06:45,206 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 22:06:45,206 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:06:45,207 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:06:45,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:06:45,207 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:06:45,207 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 22:06:45,207 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 22:06:45,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:06:45,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:06:45,208 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 22:06:45,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 22:06:45,209 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:06:45,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 22:06:45,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 22:06:45,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 22:06:45,210 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 22:06:45,210 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 22:06:45,211 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d866fedd3df666b1282e36d0ae87b17d0a587658c87dddd4d2314d9586432757 [2024-11-20 22:06:45,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:06:45,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:06:45,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:06:45,565 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:06:45,565 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:06:45,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-100.i [2024-11-20 22:06:46,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:06:47,284 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:06:47,284 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-100.i [2024-11-20 22:06:47,301 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9afcdad9f/7a175b1a8eb949c78c6403bb60e0e31c/FLAG7e493a8e7 [2024-11-20 22:06:47,316 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9afcdad9f/7a175b1a8eb949c78c6403bb60e0e31c [2024-11-20 22:06:47,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:06:47,319 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:06:47,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:06:47,320 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:06:47,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:06:47,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e780a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47, skipping insertion in model container [2024-11-20 22:06:47,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,371 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:06:47,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:06:47,736 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:06:47,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:06:47,824 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:06:47,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47 WrapperNode [2024-11-20 22:06:47,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:06:47,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:06:47,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:06:47,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:06:47,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,874 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2024-11-20 22:06:47,875 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:06:47,876 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:06:47,876 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:06:47,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:06:47,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,889 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,907 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 22:06:47,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,924 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:06:47,930 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:06:47,930 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:06:47,930 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:06:47,931 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47" (1/1) ... [2024-11-20 22:06:47,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:06:47,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:06:47,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 22:06:47,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 22:06:48,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 22:06:48,018 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-20 22:06:48,018 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-20 22:06:48,018 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-20 22:06:48,019 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-20 22:06:48,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 22:06:48,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:06:48,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:06:48,021 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 22:06:48,135 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:06:48,138 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:06:48,268 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 22:06:48,269 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:06:48,371 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:06:48,371 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-20 22:06:48,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:06:48 BoogieIcfgContainer [2024-11-20 22:06:48,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:06:48,374 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 22:06:48,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 22:06:48,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 22:06:48,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:06:47" (1/3) ... [2024-11-20 22:06:48,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44cf7d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:06:48, skipping insertion in model container [2024-11-20 22:06:48,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:47" (2/3) ... [2024-11-20 22:06:48,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44cf7d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:06:48, skipping insertion in model container [2024-11-20 22:06:48,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:06:48" (3/3) ... [2024-11-20 22:06:48,381 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind1-100.i [2024-11-20 22:06:48,397 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 22:06:48,398 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-20 22:06:48,398 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 22:06:48,450 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 22:06:48,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 27 transitions, 68 flow [2024-11-20 22:06:48,507 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-11-20 22:06:48,507 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 22:06:48,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 25 events. 2/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 53 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-11-20 22:06:48,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 27 transitions, 68 flow [2024-11-20 22:06:48,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 55 flow [2024-11-20 22:06:48,531 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 22:06:48,539 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7531af05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 22:06:48,540 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-20 22:06:48,549 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 22:06:48,553 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-20 22:06:48,553 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 22:06:48,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:06:48,554 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 22:06:48,555 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-20 22:06:48,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:06:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash 214452559, now seen corresponding path program 1 times [2024-11-20 22:06:48,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:06:48,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298986656] [2024-11-20 22:06:48,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:06:48,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:06:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:06:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:06:48,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:06:48,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298986656] [2024-11-20 22:06:48,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298986656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:06:48,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:06:48,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 22:06:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008131755] [2024-11-20 22:06:48,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:06:48,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:06:48,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:06:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:06:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:06:48,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-20 22:06:48,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:48,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:06:48,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-20 22:06:48,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:06:48,947 INFO L124 PetriNetUnfolderBase]: 82/192 cut-off events. [2024-11-20 22:06:48,948 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-20 22:06:48,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 192 events. 82/192 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 838 event pairs, 66 based on Foata normal form. 10/163 useless extension candidates. Maximal degree in co-relation 328. Up to 144 conditions per place. [2024-11-20 22:06:48,952 INFO L140 encePairwiseOnDemand]: 25/27 looper letters, 14 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2024-11-20 22:06:48,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 83 flow [2024-11-20 22:06:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:06:48,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:06:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2024-11-20 22:06:48,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2024-11-20 22:06:48,965 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 55 flow. Second operand 3 states and 43 transitions. [2024-11-20 22:06:48,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 83 flow [2024-11-20 22:06:48,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 78 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 22:06:48,970 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 50 flow [2024-11-20 22:06:48,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2024-11-20 22:06:48,975 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2024-11-20 22:06:48,975 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 50 flow [2024-11-20 22:06:48,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:48,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:06:48,975 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 22:06:48,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 22:06:48,976 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-20 22:06:48,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:06:48,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1941905028, now seen corresponding path program 1 times [2024-11-20 22:06:48,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:06:48,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637760630] [2024-11-20 22:06:48,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:06:48,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:06:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:06:49,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:06:49,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:06:49,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637760630] [2024-11-20 22:06:49,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637760630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:06:49,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:06:49,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 22:06:49,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020068620] [2024-11-20 22:06:49,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:06:49,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:06:49,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:06:49,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:06:49,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:06:49,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-20 22:06:49,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:49,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:06:49,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-20 22:06:49,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:06:49,167 INFO L124 PetriNetUnfolderBase]: 68/162 cut-off events. [2024-11-20 22:06:49,168 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 22:06:49,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 162 events. 68/162 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 653 event pairs, 54 based on Foata normal form. 8/137 useless extension candidates. Maximal degree in co-relation 291. Up to 120 conditions per place. [2024-11-20 22:06:49,171 INFO L140 encePairwiseOnDemand]: 25/27 looper letters, 13 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2024-11-20 22:06:49,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 76 flow [2024-11-20 22:06:49,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:06:49,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:06:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-11-20 22:06:49,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-20 22:06:49,174 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 3 states and 42 transitions. [2024-11-20 22:06:49,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 76 flow [2024-11-20 22:06:49,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:06:49,175 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 49 flow [2024-11-20 22:06:49,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2024-11-20 22:06:49,176 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2024-11-20 22:06:49,176 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 49 flow [2024-11-20 22:06:49,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:49,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:06:49,176 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:06:49,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 22:06:49,177 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-20 22:06:49,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:06:49,177 INFO L85 PathProgramCache]: Analyzing trace with hash -72726013, now seen corresponding path program 1 times [2024-11-20 22:06:49,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:06:49,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088851815] [2024-11-20 22:06:49,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:06:49,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:06:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:06:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:06:49,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:06:49,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088851815] [2024-11-20 22:06:49,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088851815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:06:49,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:06:49,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:06:49,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618204833] [2024-11-20 22:06:49,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:06:49,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:06:49,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:06:49,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:06:49,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:06:49,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-20 22:06:49,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:49,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:06:49,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-20 22:06:49,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:06:49,443 INFO L124 PetriNetUnfolderBase]: 72/157 cut-off events. [2024-11-20 22:06:49,446 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 22:06:49,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 157 events. 72/157 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 530 event pairs, 18 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 307. Up to 55 conditions per place. [2024-11-20 22:06:49,448 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 15 selfloop transitions, 3 changer transitions 13/36 dead transitions. [2024-11-20 22:06:49,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 144 flow [2024-11-20 22:06:49,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:06:49,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:06:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-11-20 22:06:49,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-11-20 22:06:49,453 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 49 flow. Second operand 5 states and 78 transitions. [2024-11-20 22:06:49,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 144 flow [2024-11-20 22:06:49,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 36 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:06:49,458 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 61 flow [2024-11-20 22:06:49,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=61, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2024-11-20 22:06:49,459 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-11-20 22:06:49,459 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 61 flow [2024-11-20 22:06:49,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:49,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:06:49,459 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:06:49,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 22:06:49,460 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-20 22:06:49,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:06:49,461 INFO L85 PathProgramCache]: Analyzing trace with hash -492627500, now seen corresponding path program 1 times [2024-11-20 22:06:49,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:06:49,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88313843] [2024-11-20 22:06:49,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:06:49,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:06:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:06:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:06:49,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:06:49,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88313843] [2024-11-20 22:06:49,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88313843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:06:49,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:06:49,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:06:49,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627076180] [2024-11-20 22:06:49,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:06:49,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:06:49,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:06:49,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:06:49,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:06:49,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-20 22:06:49,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:49,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:06:49,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-20 22:06:49,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:06:49,630 INFO L124 PetriNetUnfolderBase]: 50/121 cut-off events. [2024-11-20 22:06:49,630 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-20 22:06:49,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 121 events. 50/121 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 328 event pairs, 32 based on Foata normal form. 5/115 useless extension candidates. Maximal degree in co-relation 266. Up to 80 conditions per place. [2024-11-20 22:06:49,634 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 20 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-20 22:06:49,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 129 flow [2024-11-20 22:06:49,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:06:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:06:49,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-11-20 22:06:49,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2024-11-20 22:06:49,637 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 61 flow. Second operand 4 states and 61 transitions. [2024-11-20 22:06:49,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 129 flow [2024-11-20 22:06:49,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 115 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-20 22:06:49,638 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 73 flow [2024-11-20 22:06:49,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=73, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2024-11-20 22:06:49,639 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2024-11-20 22:06:49,639 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 73 flow [2024-11-20 22:06:49,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:49,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:06:49,640 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:06:49,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 22:06:49,640 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-20 22:06:49,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:06:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash 37639074, now seen corresponding path program 1 times [2024-11-20 22:06:49,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:06:49,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236665786] [2024-11-20 22:06:49,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:06:49,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:06:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:06:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:06:49,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:06:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236665786] [2024-11-20 22:06:49,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236665786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:06:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531872309] [2024-11-20 22:06:49,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:06:49,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:06:49,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:06:49,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:06:49,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 22:06:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:06:49,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:06:49,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:06:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:06:49,850 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:06:49,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531872309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:06:49,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:06:49,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 22:06:49,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110816756] [2024-11-20 22:06:49,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:06:49,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:06:49,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:06:49,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:06:49,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:06:49,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-20 22:06:49,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 73 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:49,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:06:49,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-20 22:06:49,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:06:49,963 INFO L124 PetriNetUnfolderBase]: 45/111 cut-off events. [2024-11-20 22:06:49,964 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-20 22:06:49,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 111 events. 45/111 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 285 event pairs, 12 based on Foata normal form. 5/105 useless extension candidates. Maximal degree in co-relation 260. Up to 35 conditions per place. [2024-11-20 22:06:49,967 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 23 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2024-11-20 22:06:49,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 153 flow [2024-11-20 22:06:49,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:06:49,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:06:49,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-11-20 22:06:49,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-11-20 22:06:49,970 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 73 flow. Second operand 6 states and 83 transitions. [2024-11-20 22:06:49,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 153 flow [2024-11-20 22:06:49,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:06:49,971 INFO L231 Difference]: Finished difference. Result has 33 places, 21 transitions, 77 flow [2024-11-20 22:06:49,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2024-11-20 22:06:49,972 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-11-20 22:06:49,972 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 77 flow [2024-11-20 22:06:49,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:49,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:06:49,973 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:06:49,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 22:06:50,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:06:50,174 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-20 22:06:50,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:06:50,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1166811537, now seen corresponding path program 1 times [2024-11-20 22:06:50,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:06:50,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269548096] [2024-11-20 22:06:50,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:06:50,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:06:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:06:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:06:50,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:06:50,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269548096] [2024-11-20 22:06:50,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269548096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:06:50,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186443561] [2024-11-20 22:06:50,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:06:50,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:06:50,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:06:50,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:06:50,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 22:06:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:06:50,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:06:50,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:06:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:06:50,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:06:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:06:50,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186443561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:06:50,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:06:50,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:06:50,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173327326] [2024-11-20 22:06:50,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:06:50,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:06:50,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:06:50,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:06:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:06:50,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2024-11-20 22:06:50,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 77 flow. Second operand has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:50,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:06:50,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2024-11-20 22:06:50,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:06:50,646 INFO L124 PetriNetUnfolderBase]: 75/186 cut-off events. [2024-11-20 22:06:50,647 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-11-20 22:06:50,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 186 events. 75/186 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 485 event pairs, 27 based on Foata normal form. 15/195 useless extension candidates. Maximal degree in co-relation 475. Up to 70 conditions per place. [2024-11-20 22:06:50,649 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 37 selfloop transitions, 9 changer transitions 0/51 dead transitions. [2024-11-20 22:06:50,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 261 flow [2024-11-20 22:06:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:06:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:06:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-11-20 22:06:50,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5148148148148148 [2024-11-20 22:06:50,653 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 77 flow. Second operand 10 states and 139 transitions. [2024-11-20 22:06:50,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 261 flow [2024-11-20 22:06:50,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 235 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-20 22:06:50,657 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 121 flow [2024-11-20 22:06:50,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=121, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2024-11-20 22:06:50,658 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2024-11-20 22:06:50,659 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 121 flow [2024-11-20 22:06:50,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:50,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:06:50,660 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:06:50,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 22:06:50,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-20 22:06:50,861 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-20 22:06:50,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:06:50,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1977723105, now seen corresponding path program 2 times [2024-11-20 22:06:50,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:06:50,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165688936] [2024-11-20 22:06:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:06:50,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:06:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:06:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:06:51,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:06:51,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165688936] [2024-11-20 22:06:51,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165688936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:06:51,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187443664] [2024-11-20 22:06:51,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:06:51,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:06:51,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:06:51,048 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:06:51,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 22:06:51,108 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:06:51,109 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:06:51,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:06:51,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:06:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 22:06:51,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:06:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 22:06:51,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187443664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:06:51,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:06:51,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 19 [2024-11-20 22:06:51,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060661806] [2024-11-20 22:06:51,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:06:51,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 22:06:51,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:06:51,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 22:06:51,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-20 22:06:51,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-20 22:06:51,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 121 flow. Second operand has 20 states, 20 states have (on average 6.1) internal successors, (122), 20 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:51,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:06:51,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-20 22:06:51,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:06:51,985 INFO L124 PetriNetUnfolderBase]: 154/376 cut-off events. [2024-11-20 22:06:51,985 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2024-11-20 22:06:51,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 376 events. 154/376 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1367 event pairs, 18 based on Foata normal form. 20/391 useless extension candidates. Maximal degree in co-relation 1004. Up to 61 conditions per place. [2024-11-20 22:06:51,987 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 0 selfloop transitions, 0 changer transitions 118/118 dead transitions. [2024-11-20 22:06:51,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 118 transitions, 620 flow [2024-11-20 22:06:51,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-20 22:06:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-20 22:06:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 232 transitions. [2024-11-20 22:06:51,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30687830687830686 [2024-11-20 22:06:51,989 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 121 flow. Second operand 28 states and 232 transitions. [2024-11-20 22:06:51,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 118 transitions, 620 flow [2024-11-20 22:06:51,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 118 transitions, 576 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-20 22:06:51,993 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2024-11-20 22:06:51,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2024-11-20 22:06:51,994 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 32 predicate places. [2024-11-20 22:06:51,994 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2024-11-20 22:06:51,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.1) internal successors, (122), 20 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:51,997 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-20 22:06:51,997 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2024-11-20 22:06:51,998 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-11-20 22:06:51,998 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-11-20 22:06:51,998 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2024-11-20 22:06:51,998 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2024-11-20 22:06:51,998 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-11-20 22:06:52,000 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-11-20 22:06:52,000 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-11-20 22:06:52,000 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2024-11-20 22:06:52,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 22:06:52,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:06:52,202 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-11-20 22:06:52,206 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 22:06:52,206 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 22:06:52,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:06:52 BasicIcfg [2024-11-20 22:06:52,211 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 22:06:52,212 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 22:06:52,212 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 22:06:52,212 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 22:06:52,212 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:06:48" (3/4) ... [2024-11-20 22:06:52,213 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 22:06:52,216 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f1 [2024-11-20 22:06:52,216 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2024-11-20 22:06:52,219 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2024-11-20 22:06:52,219 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-20 22:06:52,220 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-20 22:06:52,220 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-20 22:06:52,290 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 22:06:52,290 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 22:06:52,291 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 22:06:52,292 INFO L158 Benchmark]: Toolchain (without parser) took 4972.57ms. Allocated memory is still 167.8MB. Free memory was 129.9MB in the beginning and 85.5MB in the end (delta: 44.5MB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2024-11-20 22:06:52,294 INFO L158 Benchmark]: CDTParser took 0.93ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 91.0MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 22:06:52,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 505.78ms. Allocated memory is still 167.8MB. Free memory was 129.9MB in the beginning and 107.6MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-20 22:06:52,295 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.94ms. Allocated memory is still 167.8MB. Free memory was 107.6MB in the beginning and 105.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 22:06:52,295 INFO L158 Benchmark]: Boogie Preprocessor took 53.29ms. Allocated memory is still 167.8MB. Free memory was 105.5MB in the beginning and 103.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 22:06:52,295 INFO L158 Benchmark]: RCFGBuilder took 442.52ms. Allocated memory is still 167.8MB. Free memory was 103.4MB in the beginning and 83.1MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-20 22:06:52,295 INFO L158 Benchmark]: TraceAbstraction took 3837.14ms. Allocated memory is still 167.8MB. Free memory was 82.5MB in the beginning and 89.5MB in the end (delta: -7.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 22:06:52,296 INFO L158 Benchmark]: Witness Printer took 79.18ms. Allocated memory is still 167.8MB. Free memory was 89.5MB in the beginning and 85.5MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 22:06:52,297 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 91.0MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 505.78ms. Allocated memory is still 167.8MB. Free memory was 129.9MB in the beginning and 107.6MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.94ms. Allocated memory is still 167.8MB. Free memory was 107.6MB in the beginning and 105.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.29ms. Allocated memory is still 167.8MB. Free memory was 105.5MB in the beginning and 103.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 442.52ms. Allocated memory is still 167.8MB. Free memory was 103.4MB in the beginning and 83.1MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3837.14ms. Allocated memory is still 167.8MB. Free memory was 82.5MB in the beginning and 89.5MB in the end (delta: -7.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 79.18ms. Allocated memory is still 167.8MB. Free memory was 89.5MB in the beginning and 85.5MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 45 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 556 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 517 mSDsluCounter, 234 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 222 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 665 IncrementalHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 12 mSDtfsCounter, 665 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=6, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 128 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 363 SizeOfPredicates, 9 NumberOfNonLiveVariables, 235 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 46/103 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-20 22:06:52,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE